Container



July 25, 1944. KUHN I 2,354,425

CONTAINER Filed Oct. 4, 1940 4 Sheets-Sheet 1 INVENTOR ATTORNEYS July25, 1944.

M. o. KUHN CONTAINER Filed Oct. 4, 1940 4 Sheets- Sheet 2 R O T N E V mmax OJ'ulm BY 8% q 3 1.

f fRNEYs July 25,1944. M. OQKUHN 2,354,425

CONTAINER Fi'l ed Oct. 4, 1940 4 Sheets-Sheet 3 r INYENTOR I 1f maxalfuhz m: H 4 m;

' v ATTORNEYS "M. O. KUHN July 25,

CONTAINER Filed Oct. 4; 1940 4 Sheets She et 4 Jab 3% ATT RNEYS PatentedJuly 25, 1944 CONTAINER Max 0. Kuhn, Ouyahoga Falls, Ohio, assignor to IV The Firestone Tire & Rubber Co mpany, Akron,

Ohio,a corporation 01' Ohio Application October 4, 1940, Serial No.359,673

1 Claim.

This application relates to containers, and more"- especially to singlewalled metallic containers and to methods of manufacturing same.

Many types of containers have heretofore been made with a majority ofthe containers being of the double wall type. One principal reason formaking containers double walled is that it is difiicult to producesingle walled containersthat retain their shape when subjected to therough use which containers normally receive. Another reason is that mostsingle walled containers enlarge when containing a fluid under pressure.These disadvantages of single wall containers are diflicultto overcomeand have forced most manufacturers to produce double ,walled containers,

. whereas obviously double walled containers weigh and cost more thansingle walled containers.

The general object of the present invention is to provide a novel andimproved type of container.

A further object of the invention is to provide a sturdy, constantvolume, lightweight container which can be readily and easily assembled.

Another object of the invention is to provide a single wall containerhaving'desirable physical properties.

Further objects of the invention will'be mani-- fest from the followingspecification which is described with particular reference to theaccompanying drawings, in which:

Figure 1 is an elevation, partly in section, of one embodiment of theinvention produced in accordance with the method of the invention;

Figure '2 is a top plan, partly in section, of the container of Figure1;

Figure 3 is a fragmentary elevation of the lower tapping means of Figure1;

Figure 4 is a fragmentary section on line 4-4 of Figure 1;

Figure 5 is a bottom plan of the container of F r Figure 6 is anenlarged vertical sectional elevation of a joint formed in a modifiedform of bung construction;

Figure 7 is a plan of a modified bung construetion partially disclosedin Figure 6;

Figures 8, 9, and 10 are sectional elevations on lines 8- 8, 99 ofFigure 7 and Ill-l0 of Figure 8,, respectively;

Figure 11 is a section on line lll| of Figure 12;

Figure12 is a plan of another embodiment of the invention; and 1 Figure13 is a section of a modified tap construction.

Referring specifically to the drawings, a subinforced against localizedaxial outward move- 'ment by their curved contour. Outward movement ofthe heads as a unit appears to be fulcrumed about the outer corners ofthe double walled chimes, Such movement of the container heads isprevented by sharply reducing the end diameter of the sections by aseries of steps or corrugations l8 and I9 formed in the outer walls ofthe chimes l4 and I5, respectively, so that the fulcrum arms, formovement of the heads of the containersections about the outer edges ofthe double walled chimes are made as short as is feasible. This avoidsexcessive axial movement of the heads even when the section has anappreciable. outwardly directed force thereon. The container section IIis further reinforced by the continuous ring formed at the base of theinner wall of the chime. Furthermore, the steps II and i9 extendcompletely around the ends of the container and reinforce the containeragainst axial impacts.

The container shown is provided with Golden Gate type of tapping means.To secure the tapping means in position, a flat portion 2| is formedinthe head IS with a tap'bu'shing 22 having an outwardlyextending'flange '23 formed at its inner-end being welded to thecontainer manner to the container section l2 in a flat portion formed inthe outer wall of the chime l5. Note that an integral embossed ar'cuatesection 21 is formed in the chime l5 to engage with the bushing 26 sothat the tap can be placed as close to the bottom of the container asvpossible.

The head I! of container section l2, which is the lower containersection and must have a tapping orifice therein, is reinforced byforming a radially directed tapping trough 28 therein, which troughextends from the crown of the head I! to the inner wall of the chime ISin alignment with tion of the barrel.

the bushing 26. The trough 28 combines with the arcuate head l1 and thereduced diameter for the ends of the container sections to form a sturdyreinforcement for the container head and prevent expansion thereof. Thehead is strengthened, it appears, by the semi-cylindrical contour of thetrough and by the substantially axially extending sections of the troughwall adjacent the inner wall of the chime l5.

A container reinforcing and strengthening band 29 is formed in themedial region of the container ring l3 and rolling rings 3| and 32 areformed at the edges of the band 29. A bung bushing 33 is secured to aflat spot 34 in the band 29 and extends outwardly therefrom with theouter edge of the bushing 33 being braced and a continuous rollingsurface for the container being provided by a metal patch plate 35 whichis secured to the bushing 33 and is arched over the flat spot 34. Thepatch plate 35 is secured at its edges to the ring l3 and makes the band29, in effect, continuous. The bushing 33 is reinforced by a sput 36positioned therearound.

In making thecontainer sections l l and I2, the articles are first drawnfrom flat sheets or discs into cylinders (see section shown in dottedlines Y in Figure 1) which are substantially the proper form onlysmaller than the ultimate size desired. The sections are trimmed roughlyand expanded to the substantially conical contour or size desired.Finally the sections are drawn or pressed to the exact shape desired andfinished by trimming the edges thereof. The ring I3 is formed byexpanding a circular metal band to the desired contour. The containersections and ring are formed of a suitable metal such as stainless steeland are cold worked to shape to harden and strengthen the containerparts which are butt welded together by the atomic hydrogen methodwherein no extra metal is added and a stream of hydrogen is directedonto the surfaces being fused together by an electric arc. If necessary,a small amount of stainless steel rod can be melted in with the parts asthey are being fused together. The tap bushings, the bung bushing, andpatch plate, should be made of the same metal as the container sections,and beinstance, a complete annular band 5| is formed in the medialmember 52 of a container, which band has rolling rings 53 and 54adjacent the edges thereof. After the band 5| is formed, preferably bycold rolling it into the member 52, a relatively thin reinforcing plate59 having a bun liner 55 secured thereto is secured to a portion of theinner surface of the band 5| by spot welding. A reinforcing sput 51 ispositioned around the bung liner 56 and a bung opening is formed inthe-band 5| before associating the reinforcing plate with the band 5|.The outer end 560. of the bung liner extends through the bung aperture.Next a substantially rectangular, in projection, section 55 is cut fromthe band 5| adjacent the bung opening by a suitable punch and die. Theplate 59 is trimmed tothe exact size of the section 55 by this operationand the plate and section are then secured together with their edges invertical alignment, by spot welding their edges together, which forms abung unit 58. Note that the center portion of the plate 59 is flatwhile, the ends and sides thereof are out of the plane of the centerportion and are contoured so as to fit snugly against the section 55.The bung unit 58 isplaced in the hole formed in the band 5| by cuttingsection 55 therefrom and the inner edge of the plate 59'is positionedflush with the inner edge of the band which obviously makes the outeredge of the section 55 protrude slightly beyond the surface of thecontainer member 52. The abutted edges then are fused together by theatomic hydrogen process, by which all joints in the container are madeThe fused joint positioning the bung unit 58 now is tested to determineif it is watertight and, if tight, the protruding end 55 of the bungliner is pressed down against the sput 51, while the liner is pressedout against the sput, and atomically welded in place. The dotted line inFigure 7 indicates the line of contact of the plate 59 with the section55. In securing the bung unit to the container, he plate 59 is securedto the section 55 at the edge thereof while both the plate and sectionare secured to the container.- If desired, the plate 59 may be made by aseparatepunching step and be secured to the section 55, after thesection is cut from the band 5|. properly positioned, then a containersection or sections can be secured'to the member 52 to form a containertherefrom. If the section 55 does not readilyfit back into the openingproduced by cutting it from the band 5|, the edges of the section may betrimmed slightly to facilitate repositioning the section. Or, the band5| may be heated, for example, by placing it on a hot welding jigwhereby the hole in the band 5| is enlarged slightly and adapted toreceive the section 55. 7

Figures 11 and 12 show a container IOa, embodying the present invention,provided with a tap opening adapted to receive a Peerless type fitting.In this case container sections Ila and |2a combine with a containerring |3a to form the container which has a hung bushing 33a and a coverpatch 35a as in the embodiment of the invention shown in Figures 1through 5. Note that rolling rings Ila and 32a have flat loadcarryingsurfaces. Only onetapping opening is formed in the container.This opening is defined by a stainless steel tap liner 4| having aflange 42 at its base, which is secured toan inwardly extendingstainless steel connecting ring 43 that in turn is secured to the crownof head |6a of the container section Ila. All of these joints are buttwelded by the atomic hydrogen process. In some cases the indentedconnecting or anchoring ring may be formed integrally with the container head, or the. liner 4| and ring 43 may be integral, if desired.These parts can be made by forming a small hole in the metal beingprocessed and partially drawing out the metal, and then trimming thehole and drawing the metal to the exact shape desired, which method iscoveredin A. M. Brown Pat. No. 2,214,889. 7 A modified type of tapconstruction, including a sput, or fitting 60 having an annular recess6| formed in the bore thereof, is shown in Figure 13. A tap liner 62 isexpanded into the recess 6| in any suitable manner so that the linerfollows the exact contour of the sput and a corresponding recess 63 isformed in the liner. The outer end of the liner is flared out andpressed down against After the bung unit is container.

the sput, as previously explained. A feature of this type of tapconstruction is that the sput is positively secured to the tap liner anda liquid tight joint between the sput and liner is produced. Since thesput 60 does not contact the contents of the container, it can be madefrom any suitable material.

The containers of the invention are provided with bung bushings whichconnect to a flattened zone of the container in order that the inner andouter ends of the bushings can be anchored in place without forming aprotuberance on the Also, this bung construction permits completedrainage of the container. No crevices or cracks are formed on the innersurface of the container, since it is primarily used as a beveragecontainer and it is essential that the container can be kept cleaneasily. Preferably all of the component parts of the containers of theinvention arepmade from stainless steel, except for the reinforcingsputs which may be made from any suitable material, such as carbonsteel. A further feature of the container is that it does not expandappreciably when it is filled under internal pressure. Hence, no liquidis expelled when the filling pressure is removed after the container isfilled, and the volumetric capacity of the container does not varysubstantially under different degrees of internal pressure.

It will be seen that a sturdy easily constructed container has been,provided by the invention and that theobjects thereof have beenrealized.

While several embodiments of the invention have been illustrated anddescribed herein, further modification of the invention may be madewithout departing from the scope of the invention as defined in theappended claim.

What is claimed is:

In a single wall metallic container, a centrally disposed generallycylindrical wall portion having a bung aperture formed therein, a pairof closed end portions, a bung liner, a bung liner reinforcing spud, anouter plate cut from said central portion and consisting of a segment ofsaid wall portion about and including the bung aperture of said barrel,said outer plate having an inner reinforcing plate welded in fluid tightrelation to its undersurface with the edges of said plates in alignment,said inner plate being composed of substantially-thinner, metal thanthat of the outer plate, said inner plate having a bung aperturetherein, said inner plate having its central portion spaced radiallyapart from said outer plate, said bung liner with its reinforcing spudtraversing the space between said apertures and joining said plates influid tight relation, said bung liner, spud and plates comprising a bungunit, said bung unit having the edge portion of said inner plate inabutting relation with the edges of the opening left by the removal ofsaid outer plate and being welded in fluid tight relation thereto withthe inner surface of said inner plate .flush with the inner surface ofsaid cylindrical wall portion. 7

